| 1. |
|
|
| 2. |
- Nordlander, Ebbe, et al.
(author)
-
Iron 1994
- 1997
-
In: Coordination Chemistry Reviews. - 0010-8545. ; 162, s. 345-415
-
Research review (peer-reviewed)
|
|
| 3. |
- Nordlander, Ebbe, et al.
(author)
-
Iron 1995
- 1998
-
In: Coordination Chemistry Reviews. - 0010-8545. ; 172:1, s. 3-97
-
Research review (peer-reviewed)
|
|
| 4. |
- Lovell, T., et al.
(author)
-
Density functional methods applied to metalloenzymes
- 2003
-
In: Coordination chemistry reviews. - 0010-8545 .- 1873-3840. ; 238, s. 211-232
-
Research review (peer-reviewed)abstract
- Density functional calculations for structures, spin states, redox energetics and reaction pathways are presented for some selected metalloenzymes. The specific enzymes examined are: (1) Fe and Mn superoxide dismutase for redox energetics and the role of second shell residues; (2) galactose oxidase (Cu enzyme) and (3) glyoxalase I (Zn enzyme) for reaction pathways, mechanisms, intermediates, and transition states (reaction barriers); (4) iron-oxo dimer enzymes methane monooxygenase and ribonucleotide reductase for characterizing the oxidized and reduced forms in terms of structures and protonation states, and for a proposed structure for the high-valent intermediate Q in MMO. The interaction of the active site with the surrounding protein environment is also explored in a number of cases either by using expanded quantum mechanically treated clusters, or by using electrostatic/ dielectric representations of the protein-solvent environment.
|
|
| 5. |
- Abdelhamid, Hani Nasser, et al.
(author)
-
Cellulose-metal organic frameworks (CelloMOFs) hybrid materials and their multifaceted Applications : A review
- 2022
-
In: Coordination chemistry reviews. - : Elsevier BV. - 0010-8545 .- 1873-3840. ; 451
-
Research review (peer-reviewed)abstract
- Cellulose-MOFs (CelloMOFs) are attractive hybrid materials that make available a range of hitherto unattainable properties by conjugating cellulosic materials with metal-organic frameworks (MOFs). CelloMOFs have demonstrated a great potential to be applied in several fields such as water remediation, air purification, gas storage, sensing/biosensing, and biomedicine. CelloMOFs can act as an efficient adsorbent to remove emerging contaminants such as metals, dyes, drugs, antibiotics, pesticides, and oils in water via adsorption. They can be also used as catalysts for catalytic degradation, reduction, and oxidation of organic pollutants. They have been applied as filters for air purification via removing greenhouse gases such as carbon dioxide (CO2), volatile organic compounds (VOCs), and particulate matter (PMs). Biomedical applications such as antibacterial, drug delivery, biosensing were also reported for CelloMOFs materials. This review summarized the synthesis, characterization, and applications of cellulose-MOFs materials. It covered a broad overview of the status of the combination of cellulose in micron to nanoscale with MOFs. At the end of the review, the challenges and outlook regarding CelloMOFs were discussed. Hopefully, this review will be a useful guide for researchers and scientists who are looking for quick access to relevant references about CelloMOFs hybrid materials and their applications.
|
|
| 6. |
- Albinsson, Bo, 1963, et al.
(author)
-
Functionalized DNA Nanostructures for Light Harvesting and Charge Separation
- 2012
-
In: Coordination Chemistry Reviews. - : Elsevier BV. - 0010-8545. ; 256:21-22, s. 2399-2413
-
Research review (peer-reviewed)abstract
- Mimicking natural photosynthesis by covalently arranging antenna and charge separation units is a formidable task. Many such beautiful supramolecular complexes have been designed and synthesized with large efforts, some of which are presented in this special issue. The ability to predict relative position of and electronic coupling between the active components in covalent arrays is quite high but there are two obvious drawbacks with the covalent approach. Firstly, as the size grows the complexity of the organic synthesis increases and secondly, sensitivity to light-induced damage becomes a major issue if covalent bonds are broken. Self-assembly of the photoactive components should, in principle, provide a solution to both these issues but generally the ability to predict position and electronic coupling is too low to have the designed properties needed for a functional artificial photosynthetic complex. Here, we present an approach of using DNA as a template for arranging both charge separation units and antenna molecules that govern long-range energy transfer. Of particular interest is the ability of DNA to function as a scaffold for chromophores, either through covalent attachment, or through non-covalent association by means of intercalation or grove binding. Using controlled positioning of dyes, multichromophoric assemblies can be created, capable of long range communication through multi-step energy transfer. This facilitates creation of DNA-based photonic devices for both light harvesting and directed information transfer. The channeled excitation energy can be transformed site specifically to chemical energy by charge separation of DNA linked porphyrins. A two phase system is discussed, in which the DNA is located in buffered solution whereas the hydrophobic porphyrins, responsible for the charge separation reaction, are located in the lipid bilayer of liposomes or supported lipid bilayers.
|
|
| 7. |
- Amaro-Gahete, Juan, et al.
(author)
-
Catalytic systems mimicking the [FeFe]-hydrogenase active site for visible-light-driven hydrogen production
- 2021
-
In: Coordination chemistry reviews. - : Elsevier. - 0010-8545 .- 1873-3840. ; 448
-
Research review (peer-reviewed)abstract
- A global hydrogen economy could ensure environmentally sustainable, safe and cost-efficient renewable energy for the 21st century. Solar hydrogen production through artificial photosynthesis is a key strategy, and the activity of natural hydrogenase metalloenzymes an inspiration for the design of synthetic catalyst systems. [FeFe]-hydrogenase enzymes, present in anaerobic bacteria and green algae, are the most efficient class of biological catalysts for hydrogen evolution. The enzymes operate in an aqueous environment, utilizing electrons that ultimately stem from photosynthesis as the only energy source. Functional synthetic models of the [FeFe]-hydrogenase enzyme active site have garnered intense interest as potential catalysts for the reduction of protons to molecular hydrogen. Herein, we take an extensive journey through the field of biomimetic hydrogenase chemistry for lightdriven hydrogen production. We open with a brief presentation of the structure and redox mechanism of the natural enzyme. Synthetic methodologies, structural characteristics, and hydrogen generation metrics relevant to the synthetic diiron catalysts ([2Fe2S]) are discussed. We first examine multicomponent photocatalysis systems with the [2Fe2S] cluster, followed by photosensitizer-[2Fe2S] dyads and molecular triads. Finally, strategies for the incorporation of [2Fe2S] complexes into supramolecular assemblies, semiconductor supports, and hybrid heterogeneous platforms are laid out. We analyze the individual properties, scope, and limitations of the components present in the photocatalytic reactions. This review illuminates the most useful aspects to rationally design a wide variety of biomimetic catalysts inspired by the diiron subsite of [FeFe]-hydrogenases, and establishes design features shared by the most stable and efficient hydrogen producing photosystems. (C) 2021 The Author(s). Published by Elsevier B.V.
|
|
| 8. |
- Andreasson, Joakim, 1973, et al.
(author)
-
Light-stimulated molecular and supramolecular systems for information processing and beyond
- 2021
-
In: Coordination Chemistry Reviews. - : Elsevier BV. - 0010-8545. ; 429
-
Research review (peer-reviewed)abstract
- In this Review the use of light to address stimuli-responsive molecular and supramolecular systems with applications in information processing and binary logic is discussed. Molecular photoswitches are at the focal point of the herein summarized works. Light offers great advantages in terms of spatiotemporal control and remote triggering. As an additional surplus, excited state processes, such as energy- and electron-transfer can be precisely designed such that photoswitchable systems yield the desired logic operation or function. As opposed to chemical signals, photons are traceless reagents, enabling the recycled operation and reconfiguration of the discussed devices. The herein in an account-style summarized examples provide an overview of merging photoswitching with information processing, hopefully serving as a starting point for further research in this exciting field.
|
|
| 9. |
- Belda, O., et al.
(author)
-
Bispyridylamides - coordination chemistry and applications in catalytic reactions
- 2005
-
In: Coordination chemistry reviews. - : Elsevier BV. - 0010-8545 .- 1873-3840. ; 249:06-maj, s. 727-740
-
Research review (peer-reviewed)abstract
- Complexes of bis(2-pyridylamides) with most metal ions have been described. A variety of coordination modes, with the neutral or the deprotonated amide functions binding either via the carbonyl oxygen atom or the amide nitrogen atom have been identified. The modular technique used for the preparation of the compounds permits facile access to ligands with substituted pyridine nuclei and ligands with different backbones. Moreover, symmetric as well as asymmetric compounds, with equal or different pyridine rings and with symmetric or non-symmetric amines, can conveniently be prepared. Chiral derivatives are easily obtained starting from chiral diamines. Several metal complexes have been studied as mimics of biological systems. In recent years a variety of metal complexes have also been employed in catalysis. Oxidations of alkanes and alkenes have been particularly well studied, although modest reactivity has usually been encountered. Other applications include their use as ligands in Lewis acid catalyzed processes. Recently, it was shown that complexes with molybdenum catalyze highly regio- and enantioselective allylic alkylations.
|
|
| 10. |
- Chábera, Pavel, et al.
(author)
-
Photofunctionality of iron(III) N-heterocyclic carbenes and related d5 transition metal complexes
- 2021
-
In: Coordination Chemistry Reviews. - : Elsevier BV. - 0010-8545. ; 426
-
Research review (peer-reviewed)abstract
- Despite a few reports of photoluminescent and strongly photo-oxidizing transition metal complexes with a d5 electronic configuration, the photophysics and photochemistry of this class of transition metal complexes have largely remained unexplored. Recent investigations of earth-abundant iron(III) N-heterocyclic carbene (NHC) complexes have demonstrated promising photophysical and photochemical properties associated with low-spin (doublet) ligand-to-metal charge transfer (2LMCT) excitations, including nanosecond photoluminescence (PL) and capabilities to drive both photo-oxidation and photo-reduction reactions. These encouraging results are at first sight surprising in light of the general scarcity of known photofunctional complexes of any transition metal complexes with a d5 electronic configuration, including 1st, 2nd and 3rd row transition metal complexes of Mn(II), Tc(II), Re(II), Fe(III), Ru(III) and Os(III). Here, we review the photophysical and photochemical properties of the new Fe(III) NHC complexes together with related d5 transition metal complexes as a basis for a broader understanding of the unorthodox photophysical and photochemical properties associated with this open-shell electronic configuration. This includes considerations of the role of charge and spin effects on the ground state electronic structure, as well as discussions of charge transfer (CT) and metal centered (MC) excited state properties. The special properties of 2LMCT excited states are emphasized as a key feature to understand the photophysics of many photofunctional d5 transition metal complexes. Further aspects of excited state dynamics with d5 light-harvesting complexes, including both intra- and inter-molecular charge transfer processes, are also discussed. Finally, some fundamental challenges and emerging opportunities for further development of photofunctional Fe(III) NHC and related LMCT/d5 complexes for light-harvesting, light-emitting, and photo(electro)chemical applications are outlined. This includes some general considerations of how the specific photochemical properties of the LMCT/d5 complexes provides an exciting opportunity to develop a unique niche within the diversity of photofunctional molecular systems alongside other types of organic and inorganic chromophores commonly used in the field of molecular photochemistry.
|
|
